breathing and combustion 1.1 OOP perongeluk ook beetje 1.2

Question 1

glucose

Answer 1

substance containing a lot of energy that is used for making other substances

Question 2

metabolism

Answer 2

conversion of substances in a cell into other substances

Question 3

mitochondrion

Answer 3

cell organelle that breaks down glucose

Question 4

What is cellular respiration?

Answer 4

The breakdown of glucose in cells to release energy, occurring in all living cells

Question 5

What are the two main requirements for cellular respiration?

Answer 5

Glucose (fuel) and oxygen

Question 6

What is the chemical equation for cellular respiration?

Answer 6

Glucose + oxygen → water + carbon dioxide + energy

Question 7

What are the two main uses of energy in the body?

Answer 7

1. Movement 2. Maintaining body temperature (37°C)

Question 8

What happens during increased physical activity?

Answer 8

More energy needed, increased respiration rate, heart and lungs work harder to supply oxygen and remove waste

Question 9

What are the waste products of cellular respiration?

Answer 9

Water and carbon dioxide

Question 10

Why is cellular respiration essential?

Answer 10

Without it, cells die. It provides energy for all life functions

Question 11

What is the relationship between physical activity and respiration?

Answer 11

More physical activity requires more respiration to produce more energy